1 const int N = 4;  //行列数
  2 Button[,] buttons = new Button[N, N];
  3 
  4 private void Form1_Load(object sender, EventArgs e)
  5 {
  6     //产生所有按钮
  7     GenerateAllButtons();
  8 }
  9 
 10 private void button1_Click(object sender, EventArgs e)
 11 {
 12     //打乱顺序
 13     Shuffle();
 14 }
 15 
 16 //生成按钮
 17 void GenerateAllButtons()
 18 {
 19     int x0 = 100, y0 = 10, w = 45, d = 50;
 20      for( int row = 0; row < N; row++ )
 21         for ( int col = 0; col < N; col++ )
 22         {
 23             int num = row * N + col;    //数字编号
 24             Button btn = new Button();
 25             btn.Text = (num + 1).ToString();
 26             btn.Top = y0 + row * d;
 27             btn.Left = x0 + col * d;
 28             btn.Width = w;
 29             btn.Height = w;
 30             btn.Visible = true;
 31             btn.Tag = row * N + col;    //button位置
 32 
 33             //注册button点击事件
 34             btn.Click += new EventHandler(btn_Click);
 35 
 36             buttons[row, col] = btn;
 37             this.Controls.Add(btn);
 38         }
 39     buttons[N - 1, N - 1].Visible = false;
 40 }
 41 
 42 void Shuffle()
 43 {
 44     Random rnd = new Random();
 45     for (int i = 0; i < 100; i++ )
 46     {
 47         int a = rnd.Next(N);
 48         int b = rnd.Next(N);
 49         int c = rnd.Next(N);
 50         int d = rnd.Next(N);
 51         Swap(buttons[a, b], buttons[c, d]);
 52     }
 53 }
 54 // 进行游戏
 55 private void btn_Click(object sender, EventArgs e)
 56 {
 57     Button btn = sender as Button;
 58     Button blank = FindHiddenButton();
 59 
 60     // 判断是否相邻
 61     if ( IsNeighbor(btn, blank) )
 62     {
 63         Swap(btn, blank);
 64         blank.Focus();
 65     }
 66 
 67     // 判断是否完成
 68     if ( ResultIsOk() )
 69     {
 70         MessageBox.Show("OK!");
 71     }
 72 }
 73 
 74 // 查找空白按钮
 75 Button FindHiddenButton()
 76 {
 77     for (int row = 0; row < N; row++)
 78         for (int col = 0; col < N; col++)
 79         {
 80             if (!buttons[row,col].Visible)
 81             {
 82                 return buttons[row, col];
 83             }
 84         }
 85     return null;
 86 }
 87 
 88 // 判断是否相邻
 89 bool IsNeighbor(Button btnA, Button btnB)
 90 {
 91     int a = (int)btnA.Tag;
 92     int b = (int)btnB.Tag;
 93     int r1 = a / N, c1 = a % N;
 94     int r2 = b / N, c2 = b % N;
 95 
 96     if ( (r1 == r2 && (c1 == c2 + 1 || c1 == c2 - 1))
 97         || (c1 == c2 && (r1 == r2 + 1 || r1 == r2 - 1)) )
 98         return true;
 99     return false;
100 }
101 
102 //检查是否完成
103 bool ResultIsOk()
104 {
105     for (int r = 0; r < N; r++)
106         for (int c = 0; c < N; c++)
107         {
108             if (buttons[r, c].Text != (r * N + c + 1).ToString())
109             {
110                 return false;
111             }
112         }
113     return true;
114 }
115 //交换两个按钮
116 void Swap(Button btna, Button btnb)
117 {
118     string t = btna.Text;
119     btna.Text = btnb.Text;
120     btnb.Text = t;
121 
122     bool v = btna.Visible;
123     btna.Visible = btnb.Visible;
124     btnb.Visible = v;
125 }